Deforestation speeds up the process of soil erosion because trees are vital in keeping soil intact. The roots of trees help prevent soil erosion because they absorb the water in soil. If there are no trees to absorb the water, flooding can happen more. In turn, flooding can cause the soil to weaken and this can cause landslides and other natural disasters.
Species that arrive first in the newly created environment or available ecosystem are called PIONEER SPECIES
It would possibly die and will not be-able to reproduce
I’m not sure what your asking. But if you have 2 different alleles of a gene it will be heterozygous